Filter cartridge for lubricating oil clarifier



H. THOMAS March 17, 1953 FILTER CARTRIDGE FOR LUBRICATING OIL CLARIFIER Filed June 22, 1949 INVENTOR. HARLAND THOMAS Patented Mar. 17,1953

FILTER CARTRIDGE FOR LUBRICATING OIL CLARIFIER Harland Thomas, Port Ewen, N. Y., assignor to Thomas Oil Cartridge, 1110., Port Ewen, N. Y.

Application June 22, 1949, Serial No. 100,610

4 Claims. (Cl. 216-138) This invention relates to lubricating oil clarifying devices for installation in the oil circulating system of a motor and more particularly to the filter cartridge mounted in the clarifying device.

In most of the present filters a replaceable cartridge is formed to be readily removed from the oil clarifying device and to permit quickly mounting a new clean filter. These cartridges are generally formed with a screen at the base of a cloth bag and cotton waste is packed into this bag and the bag is tightly tied at its top. This cartridge when mounted in an oil clarifying device must be held in a compressed form so that the oil pressure will not lift the bag and by-pass the bag and defeat the purpose of the oil cartridge or bag. There are various types of mountings but as a rule the bag is mounted by its screen end against the base of the filter and a metal crown is formed to fit against the top of the bag and is compressed against the bag by a mechanical means such as a threaded element.

An object of this invention is to provide a replaceable oil cartridge for an oil clarifying unit that may be securely mounted to prevent the bypassing of oil through the clarifying device.

A further object of this invention is to provide an oil clarifying cartridge mounted within a rigid container that may be rigidly afiixed within an oil clarifying device.

A further object of this invention is to provide an oil clarifying cartridge mounted within a can in which a spring having the general form of a helix is mounted over the perforated base of the can and cotton wadding is compressed about the spring to fill the can and a perforated top member secured to the top of the can to retain the wadding in a compact relationship.

A further object of this invention is to provide an oil clarifying cartridge having a rigid exterior container and provided with a perforated top and base and in which a spring having the general form of a helix is mounted within the can to provide a hollow center at the base of the cartridge and in which cotton wadding is securely packed and retained in this packed relationship within the can.

Further objects of thi invention shall be apparent by reference to the following detailed description and the accompanying drawing in which the figure illustrates a perspective of the oil clarifying cartridge partially in section.

Referring to the figure there is illustrated a rigid container I having the general formation of a cylinder. The cylinder I0 is provided with two perforated end members, a top member ll and. a base member 12. The top member Il may be formed so that it can be removed from the cylinder l6 and may be readily affixed to the cylinder it by snapping the member ll into a grooved formation or by affixing in any other manner to retain the disk I l in a fixed relationship to the cylinder [0. In preparing the oil cartridge for use, a spring H! which may be formed as a helix is first inserted into the can formation with the larger radius of the spring M resting on the base I 2. A specially prepared cotton wadding that is absorbent and provides the necessary filtering characteristics is then wrapped around the periphery of this spring and the cylinder I0 is completely filled or packed with this wadding. The disk H is pressed and snapped into place to retain the whole unit in a compact relationship as illustrated in the figure. Thus the unit is ready for installation in an oil clarifying device.

It is apparent that with the filter l0 mounted within a clarifying unit that the used oil entering the clarifier will pass through the perforated bottom member I2 of the oil cartridge l0 and will readily fiow upward through the empty helix of the spring [4 and will penetrate the cotton wadding of the cartridge passing upward through the wadding and. out through the perforated top member ll. When the cartridge Ill has been used for a considerable time it is easy to remove this cartridge and replace it. with a clean fresh cartridge. The cartridge [0 is provided with a finger ring 40 at its center which may be readily caught by one finger and the cartridge in may be pulled out of the clarifier unit and in turn a new cartridge It! may be forced into the unit.

It is apparent that the oil cartridge unit described may be varied to fit any particular oil filter unit and similarly clamped without departing from the spirit of this invention and this invention shall be limited only by the appended claims.

What is claimed is:

1. A cartridge for use in an oil clarifier unit comprising a can shaped rigid container with a removable perforated top, a perforated bottom, a spring formed as a helix mounted in juxtaposition to the bottom of the container, a filter of cotton wadding packed into said container to rest upon said spring and completely fill said container, said spring forming an open cone shaped chamber in the bottom of said packing, said removable top securely affixed to the container to retain the filler in its compact pressed relationship within the container.

2. A filter cartridge comprising a metallic can container having a perforated bottom and top. said top removable, a cone shaped spring mounted within the can with the apex toward the top of the can, a filtering material of cotton wadding twisted and compressed about the periphery of the spring and compressed in the can to completely fill the space above the spring in said can, the area of the lower face of said cotton 'wadding' being greater than the area of the perforated bottom of the container, the space above the spring in said perforated top secured to said can to retain the wadding in its compressed relationship for use.

3. A cartridge for use in an oil clarifier unit comprising a cylinder shaped rigid container with a top and bottom that are perforated, a spring inserted Within said container, a filtering material of cotton wadding inserted within said container Over said spring, said spring abutting with the bottom of the container on one end and abutting with said cotton Wadding on the opposite end to retain said filtering material away from the 4 perforations in the bottom of said container, said perforated top retaining said cotton wadding securely packed within said container.

4. In a device according to claim 3 in which said spring is formed generally cone shaped and rigid enough to retain this shape when the container is packed with the cotton wadding.

HARLAND THOMAS.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number I Name Date 156,488 Males Nov, '3, 1874 1,910,747 Burhans May 23, 1933 1,981,307 Burhans Nov. 20, 1934 2,143,044 Wicks et a1 Jan. 10, 1939 2,247,445 Long July 1, 1941 2,453,405 Bolser Masha-Jessa. Nov. 9, 1948 

